1 /* Unit tests for hash-map.h. 2 Copyright (C) 2015-2019 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING3. If not see 18 <http://www.gnu.org/licenses/>. */ 19 20 #include "config.h" 21 #include "system.h" 22 #include "coretypes.h" 23 #include "tm.h" 24 #include "opts.h" 25 #include "hash-set.h" 26 #include "fixed-value.h" 27 #include "alias.h" 28 #include "flags.h" 29 #include "symtab.h" 30 #include "tree-core.h" 31 #include "stor-layout.h" 32 #include "tree.h" 33 #include "stringpool.h" 34 #include "selftest.h" 35 36 #if CHECKING_P 37 38 namespace selftest { 39 40 /* Construct a hash_map <const char *, int> and verify that 41 various operations work correctly. */ 42 43 static void 44 test_map_of_strings_to_int () 45 { 46 hash_map <const char *, int> m; 47 48 const char *ostrich = "ostrich"; 49 const char *elephant = "elephant"; 50 const char *ant = "ant"; 51 const char *spider = "spider"; 52 const char *millipede = "Illacme plenipes"; 53 const char *eric = "half a bee"; 54 55 /* A fresh hash_map should be empty. */ 56 ASSERT_EQ (0, m.elements ()); 57 ASSERT_EQ (NULL, m.get (ostrich)); 58 59 /* Populate the hash_map. */ 60 ASSERT_EQ (false, m.put (ostrich, 2)); 61 ASSERT_EQ (false, m.put (elephant, 4)); 62 ASSERT_EQ (false, m.put (ant, 6)); 63 ASSERT_EQ (false, m.put (spider, 8)); 64 ASSERT_EQ (false, m.put (millipede, 750)); 65 ASSERT_EQ (false, m.put (eric, 3)); 66 67 /* Verify that we can recover the stored values. */ 68 ASSERT_EQ (6, m.elements ()); 69 ASSERT_EQ (2, *m.get (ostrich)); 70 ASSERT_EQ (4, *m.get (elephant)); 71 ASSERT_EQ (6, *m.get (ant)); 72 ASSERT_EQ (8, *m.get (spider)); 73 ASSERT_EQ (750, *m.get (millipede)); 74 ASSERT_EQ (3, *m.get (eric)); 75 76 /* Verify removing an item. */ 77 m.remove (eric); 78 ASSERT_EQ (5, m.elements ()); 79 ASSERT_EQ (NULL, m.get (eric)); 80 81 m.remove (eric); 82 ASSERT_EQ (5, m.elements ()); 83 ASSERT_EQ (NULL, m.get (eric)); 84 85 /* A plain char * key is hashed based on its value (address), rather 86 than the string it points to. */ 87 char *another_ant = static_cast <char *> (xcalloc (4, 1)); 88 another_ant[0] = 'a'; 89 another_ant[1] = 'n'; 90 another_ant[2] = 't'; 91 another_ant[3] = 0; 92 ASSERT_NE (ant, another_ant); 93 unsigned prev_size = m.elements (); 94 ASSERT_EQ (false, m.put (another_ant, 7)); 95 ASSERT_EQ (prev_size + 1, m.elements ()); 96 97 /* Need to use string_hash or nofree_string_hash key types to hash 98 based on the string contents. */ 99 hash_map <nofree_string_hash, int> string_map; 100 ASSERT_EQ (false, string_map.put (ant, 1)); 101 ASSERT_EQ (1, string_map.elements ()); 102 ASSERT_EQ (true, string_map.put (another_ant, 5)); 103 ASSERT_EQ (1, string_map.elements ()); 104 } 105 106 /* Run all of the selftests within this file. */ 107 108 void 109 hash_map_tests_c_tests () 110 { 111 test_map_of_strings_to_int (); 112 } 113 114 } // namespace selftest 115 116 #endif /* CHECKING_P */ 117